[arch-general] [solved and the culprit is] Virtualbox can't start a guest caused by NS_ERROR_FACTORY_NOT_REGISTERED

[Ralf Mardorf]

On Thu, 23 Apr 2015 12:04:57 +0200, Ralf Mardorf wrote:
>After updating everything excepted of systemd Virtualbox still can
>start a VM.

Wrong, the update without systemd already has broken Virtualbox.
By accident I sent the wrong, unedited mail.

That I need this old version of Virtualbox (4.3.12-1) soon or later
might become a serious issue, however the culprit is libvpx.

Downgrading
libvpx (1.4.0-2 -> 1.3.0-1)
ffmpeg (1:2.6.2-1 -> 1:2.6.1-3)
ffmpeg-compat (1:0.10.16-1 -> 1:0.10.15-2)
solved the issue and keeping systemd up to date doesn't cause an issue.

OT:
"downgrade
Description: Bash script for downgrading one or more packages to a
version in your cache or the A.R.M."

Unfortunately A.R.M. is missing a lot of packages.

Regards,
Ralf